Presents an activity using the cardboard tube from a roll of bathroom tissue or paper towels to help students examine and extend their understanding of the geometric properties of parallelograms. (ASK)

Explores middle school students' understanding of area and perimeter. Concludes that students need to construct visual representations of figures with given areas and perimeters, generate related word problems, and justify properties to grasp the concepts of area and perimeter. (ASK)

Presents a game designed to help middle school students think about geometric properties and the relationships among them. (ASK)

This document describes a game that provides students with practice in recognizing the point symmetry of designs. It contains information on the objective of the game, game preparation, and rules for playing. Play cards are included (four to a page). (ASK)

Presents activities to demonstrate some of the properties and relationships among the Platonic polyhedra. (ASK)

Presents an activity that uses an inexpensive paper plate and a short length of adding machine tape to help students experience the concept of radian measure. Focuses on radian measurement and connects many geometric concepts regarding the circle. (ASK)

Outlines a geometry task that uses computers to transform some quadrilaterals into other quadrilaterals. (ASK)

Presents mathematics activities focusing on explorations in the environment that include visual or geometric components. (ASK)

Helps students identify the animal that corresponds to the year of their birth according to the Chinese zodiac. Defines the structure of the Chinese zodiac so that the subsets of compatibles and opposites form closed substructures with interesting mathematical properties. (ASK)

Presents a mathematics activity in which equal areas and volumes are focused upon when sharing a circular pie. (ASK)

Discusses possible solutions for the problem of determining how many sandwiches were made with specific ingredients that appeared in the March 1998 issue of this journal. (ASK)

Presents an activity that focuses on the features of ellipses and the concepts of limit and infinity. (ASK)

Discusses the importance of communicating ideas in teaching any subject. Presents a story about an elementary-level mathematics lesson having to do with space and shape. Suggests that examining the assumptions held by teachers about the content of mathematics and how to communicate mathematics to students is very beneficial. (ASK)

Presents an activity that uses square-foot tiles as a coordinate system on which human geometric models are constructed. (ASK)

Presents a problem that uses the design show and asks students to find a series of moves to take the design from the top-left corner of a piece of paper to the bottom-right corner while remaining in its original orientation. (ASK)